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1952 Ford 8N pto slipping out of engagement

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nicko-31

05-29-2022 15:52:21

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Greetings all, as of late my 52-8N has been slipping out of PTP engagement while using the Bush Hog only. It does not disengage on it's own while using other attachment's such as disc, rake Etc. any suggestions as too look at ? Regards

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nicko-31

06-05-2022 03:24:59

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

Quoting Removed, click Modern View to see. I wanted to follow up on my findings, after I pushed the bearing retaining sleeve up against the bearing it's self thus not leaving any play between the bearing, I reinstalled and tested. All was good. Not coming out of drive any longer. Thank you for your help.

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deanostoybox

05-31-2022 07:33:12

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

There should not be any end play in the PTO shaft.

For the cause see Ultradog's reply in this thread.

In your case the rear bearing retaining ring has been driven back a bit allowing the PTO shaft to move forward and backward. This can be fixed by driving the rear bearing retaining ring tight against the bearing, and shortening the offending PTO driveshaft on the offending implement.

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nicko-31

05-31-2022 01:46:39

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

are you talking about the fork Richard ? Thanks

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Richard G.

05-31-2022 06:11:48

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-31-2022 01:46:39

In my first post below, I was talking about the lever on the left side where the shaft comes out.
The lever is held on by a small pin and on my tractor there is a lot of play there.
Mine come out of gear occasionally and I just push it back in.
I am going to take the lever off and put in a new tighter pin.
The slop in the lever to shaft is not allowing me to completely engage the PTO.

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Abbby

05-30-2022 14:00:45

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

I think you should follow the path Richard has sent you on. Remove the inspection plate on the left side of the tractor - the one the lever is mounted to. There will be a shifter rail inside the rear axle housing that shifts the PTO collar in/out. Try moving the rail forward/rearward and see that it moves freely and the lever and pin are not worn too much causing slide collar from going all the way. Inspect the shift lever assembly mounted to the cover plate to ensure it is working properly. When reinstalling the cover and lever make sure the arm on the backside of the cover is installed into the groove on the shifter rail.

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Richard G.

05-30-2022 17:49:32

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Re: 1952 Ford 8N pto slipping out of engagement in reply to Abbby, 05-30-2022 14:00:45

It is amazing how much play there can be where the lever goes on the shaft.
Easy to check.

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nicko-31

05-30-2022 13:06:12

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

Quoting Removed, click Modern View to see

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nicko-31

05-30-2022 11:13:59

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

Quoting Removed, click Modern View to see What would be the price Bruce ? and a link Please

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nicko-31

05-30-2022 10:56:05

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

. I removed the assembly and and the bearing looks good. The sleeves in front and behind the bearing on the drive shaft are giving me a reason to question due to the gap between the housing with the bearing. It is at least 1/4 of an inch of play between the two sleeves. Any thoughts ? I would like to post a picture if I can figure that out.
Third Party Image

This post was edited by nicko-31 on 05/30/2022 at 11:09 am.

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Ultradog MN

05-30-2022 07:05:19

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

Probably the most common cause of the pto slipping out of gear is the snap ring in the bearing retainer has been pushed out of place. And the most common cause of That is the telescoping driveshaft on the mower is too long.
If you watch closely when you raise the mower the lifting pushes the telescoping driveshaft forward slightly. It is the geometry of it all. Having too long of a drive shaft is often compounded by the need for an ORC (over running clutch).
The fix is to first, replace the snap ring and second to check the length of the drive shaft. You want about 1/2 to 1in of freeplay when the driveshaft relescopes to its shortest length.
This advice holds true for pretty much any tractor with 3 point hitch.
Fortunately on an N it usually damages just the circlip or bearing retainer.
On other more complex tractors with hydraulic pto clutches, too long of a mower drive shaft can cause more severe and expensive damage.

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nicko-31

05-30-2022 03:22:05

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

Quoting Removed, click Modern View to see. I will look into that. Thank you. Any post on replacement for the bearing. ?

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Bruce (VA)

05-30-2022 05:30:49

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-30-2022 03:22:05

It's a PITA. Most folks just buy a replacement shaft w/ the seal. bearing, etc already installed.

75 Tips

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Bruce (VA)

05-29-2022 18:37:50

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

In no particular order..... ...

A loose PTO bearing.

A badly worn bearing

A broken or missing snap ring groove in the PTO bearing housing

The PTO coupling splines can also be worn and cause it to jump out of gear too, but that's rare.

75 Tips

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Richard G.

05-29-2022 17:42:31

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Re: 1952 Ford 8N pto slipping out of engagement in reply to nicko-31, 05-29-2022 15:52:21

Check the pin that holds the engaging lever to the shaft.
See if there is much play.

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